Collaborative Research and Development Delivery. Order 0041: Models for the Prediction of Interfacial Properties
Abstract
The research in support of the Air Force Research Laboratory, Materials and Manufacturing Directorate was conducted at Wright-Patterson AFB, Ohio from 25 July 2005 through 4 August 2006. The task developed various experimental and computational tools to determine the material behavior of weld interfaces and local grain behavior of materials. Stereo imaging, optical microscopy and scanning electron microscopy were used to determine the local interfacial characteristics of welds as well as microstructural characteristics of grains at a micro-scale. Computational tools were also developed to analyze and combine the tensile and fatigue data for the various applications. The data shows large strain concentrations develop near the weld interface develop for resistance welds, and near grain boundaries of grain interfaces. The combined data shows the heterogeneous behavior of grains on a micro-scale. Semi-analytical computational tools that determine the stress field of two contacting bodies were also used to analyze and publish data for various contact fatigue applications. The results in the publication show the need for accurate stress based modeling tools to predict the fatigue and crack growth behavior of contracting bodies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2006
- Accession Number
- ADA462607
Entities
People
- Bence Bartha
Organizations
- Universal Technology Corporation (United States)